import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken, getUserId } from '@/utils/auth'
import Qs from 'qs'
// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 5000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent
    //配置请求头token
    if (store.getters.token) {
      let token = getToken()
      var reg = new RegExp("[\\u4E00-\\u9FFF]+", "g");
      if (!reg.test(token)) {
        config.headers['token'] = token
      }

    }
    
    if (config.method ==='get') {
      config.paramsSerializer = function (params)  {
        return Qs.stringify(params, {arrayFormat:'comma'} )
      }
    }

    if (store.getters.userID) {

      config.headers['userID'] = getUserId()

    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(

  response => {
    const res = response.data
    // if the custom code is not 20000, it is judged as an error.
    if (res.code !== 20000) {
     
      if (res.code === 51000) {
        // to re-login
        MessageBox.confirm('账号登录异常, 请重新登录！', '异常提醒', {
          confirmButtonText: '重新登录',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
      }else
      {
        Message({
          message: res.message || 'Error',
          type: 'error',
          duration: 5 * 1000
        })
      }
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      return res
    }
  },
  error => {
    console.log('err' + error) // for debug
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
